// Javascript pagination control

/**
 * Paginates an array of data.
 * @param array List of objects to render
 * @param function Function called on each member of the array to render, should take an array member and set this.html to a string
 * @param int Optional. Object to start at, defaults to 0.
 * @param int Optional. Objects per page, defaults to 10
 * @param object Variable that will be passed to the renderer callback
 */
 
var pagin_objects = new Object();

window.paginator = function(data, callback, offset, perpage, passer, ov_num_pages, ov_flip_func)
{
	load_component('flyin');
	if ( !perpage || typeof(perpage) != 'number' || ( typeof(perpage) == 'number' && perpage < 1 ) )
	{
		this.perpage = 10;
	}
	else
	{
		this.perpage = perpage;
	}
	if ( typeof(offset) != 'number' )
		this.offset = 0;
	else
		this.offset = offset;
	if ( typeof(passer) != 'undefined' )
		this.passer = passer;
	else
		this.passer = false;
	if ( ov_num_pages )
	{
		this.num_pages = ov_num_pages;
		this.flip_func = ov_flip_func;
	}
	else
	{
		this.num_pages = Math.ceil(data.length / perpage);
		this.flip_func = false;
	}
	this.random_id = 'autopagin_' + Math.floor(Math.random() * 1000000);
	this._build_control = _build_paginator;
	this.set_page = function(number)
	{
		this.offset = number * this.perpage;
		var html = this._build_control(number);
		var elements = getElementsByClassName(document.body, 'div', this.random_id + '_control');
		for ( var i = 0; i < elements.length; i++ )
			elements[i].innerHTML = html;
	}
	if ( this.num_pages > 1 )
	{
		var pg_control = '<div class="'+this.random_id+'_control">'+this._build_control(0)+'</div>';
	}
	else
	{
		var pg_control = '';
	}
	this.html = pg_control;
	var i = 0;
	while ( i < data.length )
	{
		if ( i % this.perpage == 0 )
		{
			if ( i > 0 )
				this.html += '</div>';
			var display = ( ( i * this.perpage ) == this.offset ) ? '' : 'display: none;';
			var thispage = Math.floor(i / this.perpage);
			this.html += '<div id="' + this.random_id + '_' + thispage + '" style="' + display + '">';
		}
		this.html += callback(data[i], this.passer);
		i++;
	}
	this.html += '</div>';
	this.html += pg_control;
	pagin_objects[this.random_id] = this;
}

/**
 * Yet another demonstration of the fact that with the right tools, any amount of Javascript can be ported from PHP.
 * @access private
 */

window._build_paginator = function(this_page)
{
	var div_styling = ( IE ) ? 'width: 1px; margin: 10px auto 10px 0;' : 'display: table; margin: 10px 0 10px auto;';
	var begin = '<div class="tblholder" style="'+div_styling+'"><table border="0" cellspacing="1" cellpadding="4"><tr><th>' + $lang.get('paginate_lbl_page') + '</th>';
	var block = '<td class="row1" style="text-align: center; white-space: nowrap;">{LINK}</td>';
	var end = '</tr></table></div>';
	var blk = new templateParser(block);
	var inner = '';
	var cls = 'row2';
	
	if ( this_page > 0 )
	{
		var url = '#page_'+(this_page);
		var link = "<a href=\""+url+"\" onclick=\"jspaginator_goto('"+this.random_id+"', "+(this_page-1)+"); return false;\" style='text-decoration: none;'>&laquo; " + $lang.get('paginate_btn_prev') + "</a>";
		cls = ( cls == 'row1' ) ? 'row2' : 'row1';
		blk.assign_vars({
				CLASS: cls,
				LINK: link
			});
		inner += blk.run();
	}
	if ( this.num_pages < 5 )
	{
		for ( var i = 0; i < this.num_pages; i++ )
		{
			cls = ( cls == 'row1' ) ? 'row2' : 'row1';
			var j = i + 1;
			var url = '#page_'+j;
			var link = ( i == this_page ) ? "<b>"+j+"</b>" : "<a href=\""+url+"\" onclick=\"jspaginator_goto('"+this.random_id+"', "+i+"); return false;\" style='text-decoration: none;'>"+j+"</a>";
			blk.assign_vars({
					CLASS: cls,
					LINK: link
				});
			inner += blk.run();
		}
	}
	else
	{
		if ( this_page + 5 > this.num_pages )
		{
			var list = new Array();
			var tp = this_page;                    // The vectors below used to be 3, 2, and 1
			if ( this_page + 0 == this.num_pages ) tp = tp - 2;
			if ( this_page + 1 == this.num_pages ) tp = tp - 1;
			if ( this_page + 2 == this.num_pages ) tp = tp - 0;
			for ( var i = tp - 1; i <= tp + 1; i++ )
			{
				list.push(i);
			}
		}
		else
		{
			var list = new Array();
			var current = this_page;
			var lower = ( current < 3 ) ? 1 : current - 1;
			for ( var i = 0; i < 3; i++ )
			{
				list.push(lower + i);
			}
		}
		var url = '#page_1';
		var link = ( 0 == this_page ) ? "<b>" + $lang.get('paginate_btn_first') + "</b>" : "<a href=\""+url+"\" onclick=\"jspaginator_goto('"+this.random_id+"', 0); return false;\" style='text-decoration: none;'>&laquo; " + $lang.get('paginate_btn_first') + "</a>";
		blk.assign_vars({
				CLASS: cls,
				LINK: link
			});
		inner += blk.run();

		// if ( !in_array(1, $list) )
		// {
		//   $cls = ( $cls == 'row1' ) ? 'row2' : 'row1';
		//   $blk->assign_vars(array('CLASS'=>$cls,'LINK'=>'...'));
		//   $inner .= $blk->run();
		// }

		for ( var k in list )
		{
			var i = list[k];
			if ( i == this.num_pages )
				break;
			cls = ( cls == 'row1' ) ? 'row2' : 'row1';
			var j = i + 1;
			var url = '#page_'+j;
			var link = ( i == this_page ) ? "<b>"+j+"</b>" : "<a href=\""+url+"\" onclick=\"jspaginator_goto('"+this.random_id+"', "+i+"); return false;\" style='text-decoration: none;'>"+j+"</a>";
			blk.assign_vars({
					CLASS: cls,
					LINK: link
				});
			inner += blk.run();
		}

		if ( this_page < this.num_pages )
		{
			// $cls = ( $cls == 'row1' ) ? 'row2' : 'row1';
			// $blk->assign_vars(array('CLASS'=>$cls,'LINK'=>'...'));
			// $inner .= $blk->run();

			cls = ( cls == 'row1' ) ? 'row2' : 'row1';
			var url = '#page_' + String( this.num_pages-1 );
			var link = ( ( this.num_pages - 1 ) == this_page ) ? "<b>" + $lang.get('paginate_btn_last') + "</b>" : "<a href=\""+url+"\" onclick=\"jspaginator_goto('"+this.random_id+"', "+(this.num_pages-1)+"); return false;\" style='text-decoration: none;'>" + $lang.get('paginate_btn_last') + " &raquo;</a>";
			blk.assign_vars({
					CLASS: cls,
					LINK: link
				});
			inner += blk.run();
		}

	}

	if ( this_page < ( this.num_pages - 1 ) )
	{
		var url = '#page_' + String(this_page + 2);
		var link = "<a href=\""+url+"\" onclick=\"jspaginator_goto('"+this.random_id+"', "+(this_page+1)+"); return false;\" style='text-decoration: none;'>" + $lang.get('paginate_btn_next') + " &raquo;</a>";
		cls = ( cls == 'row1' ) ? 'row2' : 'row1';
		blk.assign_vars({
					CLASS: cls,
					LINK: link
				});
			inner += blk.run();
	}

	inner += '<td class="row2" style="cursor: pointer;" onclick="paginator_goto(this, '+this_page+', '+this.num_pages+', '+this.perpage+', {js: true, random_id: \''+this.random_id+'\'});">&darr;</td>';

	var paginator = "\n"+begin+inner+end+"\n";
	return paginator;
	
}

var __paginateLock = false;

window.jspaginator_goto = function(pagin_id, jump_to)
{
	if ( __paginateLock )
		return false;
	var theobj = pagin_objects[pagin_id];
	if ( theobj.flip_func )
	{
		theobj.flip_func(theobj, jump_to);
		__paginateLock = false;
		return true;
	}
	var current_div = false;
	var new_div = false;
	for ( var i = 0; i < theobj.num_pages; i++ )
	{
		var thediv = document.getElementById(pagin_id + '_' + i);
		if ( !thediv )
		{
			// if ( window.console )
				// window.console.error('jspaginator_goto(): got a bad DOM object in loop');
			return false;
		}
		// window.console.debug("Div "+i+' of '+(theobj.num_pages-1)+': ', thediv);
		if ( thediv.style.display != 'none' )
			current_div = thediv;
		else if ( i == jump_to )
			new_div = thediv;
	}
	
	if ( !new_div )
	{
		// if ( window.console )
			// window.console.error('jspaginator_goto(): didn\'t get new div');
		return false;
	}
	if ( !current_div )
	{
		// if ( window.console )
			// window.console.error('jspaginator_goto(): didn\'t get current div');
		return false;
	}
	
	// window.console.debug(current_div);
	// window.console.debug(new_div);
	
	// White-out the old div and fade in the new one
	
	if ( IE || is_Safari || aclDisableTransitionFX )
	{
		current_div.style.display = 'none';
		new_div.style.display = 'block';
	}
	else
	{
		__paginateLock = true;
		var fade_time = 375;
		var code = 'var old = \'' + current_div.id + '\';';
		code    += 'var newer = \'' + new_div.id + '\';';
		code    += 'document.getElementById(old).style.display = "none";';
		code    += 'changeOpac(0, newer);';
		code    += 'document.getElementById(newer).style.display = "block";';
		code    += 'opacity(newer, 0, 100, '+fade_time+');';
		code    += '__paginateLock = false;';
		// if ( window.console )
			// window.console.debug('metacode for fader: ', code);
		opacity(current_div.id, 100, 0, fade_time);
		setTimeout(code, (fade_time + 50));
	}
	
	
	var pg_control = theobj._build_control(jump_to);
	var divs = getElementsByClassName(document, 'div', pagin_id + '_control');
	for ( var i = 0; i < divs.length; i++ )
	{
		divs[i].innerHTML = pg_control;
	}
}

window.paginator_goto = function(parentobj, this_page, num_pages, perpage, additive, url_string)
{
	load_component('flyin');
	
	var height = $dynano(parentobj).Height();
	var width  = $dynano(parentobj).Width();
	var left   = $dynano(parentobj).Left();
	var top    = $dynano(parentobj).Top();
	var left_pos = left + width ;
	var top_pos = height + top;
	var div = document.createElement('div');
	div.style.position = 'absolute';
	div.style.top = top_pos + 'px';
	div.className = 'question-box';
	div.style.margin = '1px 0 0 2px';
	var vtmp = 'input_' + Math.floor(Math.random() * 1000000);
	var regex = new RegExp('\"', 'g');
	var submit_target = ( typeof(url_string) == 'object' ) ? ( toJSONString(url_string) ).replace(regex, '\'') : 'unescape(\'' + escape(url_string) + '\')';
	var onclick = 'paginator_submit(this, '+num_pages+', '+perpage+', '+additive+', '+submit_target+'); return false;';
	div.innerHTML = $lang.get('paginate_lbl_goto_page') + '<br /><input type="text" size="2" style="padding: 1px; font-size: 8pt;" value="'+(parseInt(this_page)+1)+'" id="'+vtmp+'" />&emsp;<a href="#" onclick="'+onclick+'" style="font-size: 14pt; text-decoration: none;">&raquo;</a>&emsp;<a href="#" onclick="var _pn = this.parentNode; setTimeout(function() { _pn.parentNode.removeChild(_pn); }, 2000); fly_out_top(this.parentNode, false, true); return false;" style="font-size: 14pt; text-decoration: none;">&times;</a>';
	
	var body = document.getElementsByTagName('body')[0];
	domObjChangeOpac(0, div);
	
	body.appendChild(div);
	
	document.getElementById(vtmp).onkeypress = function(e)
		{
			if ( e.keyCode == 13 )
				this.nextSibling.nextSibling.onclick();
		};
	document.getElementById(vtmp).focus();
	
	// fade the div
	/*
	if(!div.id) div.id = 'autofade_'+Math.floor(Math.random() * 100000);
	var from = '#33FF33';
	Fat.fade_element(div.id,30,2000,from,Fat.get_bgcolor(div.id));
	*/
	
	fly_in_bottom(div, false, true);
	
	var divh = $dynano(div).Width();
	left_pos = left_pos - divh;
	div.style.left = left_pos + 'px';
}

window.paginator_submit = function(obj, max, perpage, additive, formatstring)
{
	var userinput = obj.previousSibling.previousSibling.value;
	userinput = parseInt(userinput);
	var offset = (( userinput - 1 ) * perpage) + additive;
	if ( userinput > max || isNaN(userinput) || userinput < 1 )
	{
		load_component(['messagebox', 'fadefilter', 'flyin']);
		new MessageBox(MB_OK|MB_ICONSTOP, $lang.get('paginate_err_bad_page_title'), $lang.get('paginate_err_bad_page_body', { max: max }));
		return false;
	}
	if ( typeof(formatstring) == 'object' )
	{
		fly_out_top(obj.parentNode, false, true);
		jspaginator_goto(formatstring.random_id, ( offset / perpage ));
	}
	else
	{
		var url = sprintf(formatstring, String(offset));
		fly_out_top(obj.parentNode, false, true);
		window.location = url;
	}
}

// This code is in the public domain. Feel free to link back to http://jan.moesen.nu/
function sprintf()
{
	if (!arguments || arguments.length < 1 || !RegExp)
	{
		return;
	}
	var str = arguments[0];
	var re = /([^%]*)%('.|0|\x20)?(-)?(\d+)?(\.\d+)?(%|b|c|d|u|f|o|s|x|X)(.*)/;
	var a = b = [], numSubstitutions = 0, numMatches = 0;
	while (a = re.exec(str))
	{
		var leftpart = a[1], pPad = a[2], pJustify = a[3], pMinLength = a[4];
		var pPrecision = a[5], pType = a[6], rightPart = a[7];
		
		//alert(a + '\n' + [a[0], leftpart, pPad, pJustify, pMinLength, pPrecision);

		numMatches++;
		if (pType == '%')
		{
			subst = '%';
		}
		else
		{
			numSubstitutions++;
			if (numSubstitutions >= arguments.length)
			{
				alert('Error! Not enough function arguments (' + (arguments.length - 1) + ', excluding the string)\nfor the number of substitution parameters in string (' + numSubstitutions + ' so far).');
			}
			var param = arguments[numSubstitutions];
			var pad = '';
 						if (pPad && pPad.substr(0,1) == "'") pad = leftpart.substr(1,1);
				else if (pPad) pad = pPad;
			var justifyRight = true;
 						if (pJustify && pJustify === "-") justifyRight = false;
			var minLength = -1;
 						if (pMinLength) minLength = parseInt(pMinLength);
			var precision = -1;
 						if (pPrecision && pType == 'f') precision = parseInt(pPrecision.substring(1));
			var subst = param;
 						if (pType == 'b') subst = parseInt(param).toString(2);
				else if (pType == 'c') subst = String.fromCharCode(parseInt(param));
				else if (pType == 'd') subst = parseInt(param) ? parseInt(param) : 0;
				else if (pType == 'u') subst = Math.abs(param);
				else if (pType == 'f') subst = (precision > -1) ? Math.round(parseFloat(param) * Math.pow(10, precision)) / Math.pow(10, precision): parseFloat(param);
				else if (pType == 'o') subst = parseInt(param).toString(8);
				else if (pType == 's') subst = param;
				else if (pType == 'x') subst = ('' + parseInt(param).toString(16)).toLowerCase();
				else if (pType == 'X') subst = ('' + parseInt(param).toString(16)).toUpperCase();
		}
		str = leftpart + subst + rightPart;
	}
	return str;
}
